[Clean up] Create a new packages for class BroadcastProviderManager and
DiscoveryProviderManager

This is needed for adding registration class later

Test: -m
Bug: 272150669
Ignore-AOSP-First: nearby_not_in_aosp_yet
Change-Id: Ie22a8300b02ab6ef4cb48aa44e6790a32401355c
Merged-In: Iff4eddf8085878e5df19d36132d415f7a8f7e55a
9 files changed